InsertQuery   (children 3)
 Function file (children 1)
  ExpressionList (children 1)
   Identifier date_as_uint16.parquet
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function toDate (alias d) (children 1)
      ExpressionList (children 1)
       Literal \'2025-08-12\'
    Set
 Set
